[moocowduckquack]

That would make for nice iconography - public keys being open padlocks, private keys being keys and encrypted things being closed padlocks.

[moocowduckquack]

was bored so made something - http://postimg.org/image/8sm7otl2p/full/

[dalek_cannes]

interesting! i can clearly understand what each means, but i think the average person might get confused. how about just the key and the open padlock? signed/encrypted content can have the icon on the side (kind of like the shortcut indicator in windows)?

[moocowduckquack]

I might have a bit more of a play about with it, oh and here's the svg as a gist if anyone wants it - https://gist.github.com/anonymous/7308250